Eton College School Hall

The sensitive restoration of Eton College's Edwardian School Hall has created a world-class, Grade II-listed performance space.

An orchestral concert taking place in the newly renovated hall.

Key information

Architect

Hopkins Architects Limited

Client

Eton College

Value

£8M

Year of Completion

2023

Services

Challenge

The upgrade of Eton College's beautiful Grade II-listed Memorial Hall, built in 1908, centred around improving the acoustic experience for audiences and performers, while preserving and celebrating the venue's historic features. It's a beautiful restoration that demonstrates how inventive, technical solutions can breathe new life into historic buildings, and connect the past with the future.

Working closely with Hopkins Architects, we provided MEP consultancy and designed a discreet, mechanical ventilation system to deliver high standards of comfort, while remaining invisible and inaudible to the audience and performers. 

Before the work began, the hall was struggling to adapt to it's many different uses throughout the school day, suffering from a lack of ventilation and also acoustic disturbance from the nearby Heathrow flight path. The upgrade also included the addition of a new movable floor to allow the transition from a flat-floor venue to raked seating, for an improved audience experience. Room acoustics were addressed with increased absorption, an acoustic array at high level, and acoustic reflectors to the hall perimeter that focus the sound upon the audience.  

Bespoke ventilation design

Our ventilation design centred around highly bespoke, supply air diffusers. We constructed a full-sized duct terminal prototype prior to installation, and subjected it to rigorous testing for aerodynamic and acoustic performance. We also incorporated existing below-ground floor ducts from an abandoned original ventilation installation into the new system, reimagining the original below-ground air distribution routes, and creating a new builderswork plenum around the tilting floor.

Turning vanes and acoustic treatment within the ducts reduce the air turbulence, so air flows smoothly and very quietly. Air enters the auditorium through vertical slots that are almost invisible, concealed in shadow gaps to either side of the intricately carved timber panels that line the hall. 

test1 Diagram showing a behind the scenes flow of air through the ductwork, and out into the auditorium.

Fresh air enters the hall via highly bespoke supply air diffusers that gently bend and squeeze air through 5 changes in direction. Air enters the auditorium through vertical slots that are almost invisible in shadow gaps to either side of the intricately carved timber panels that line the hall.

Philip Vile / Max Fordham LLP

2025 RIBA South Awards RIBA South Award